| T O P I C R E V I E W |
| Alien |
Posted - Aug 25 2003 : 9:25:07 PM
Me and Cris (FugitiveEagle) have tried everything to take off the damn blade on that old lawnmower we repaired... The bolt has gone round... We tried Rust Remover, WD-40.. We can't really think of anything else... Is cutting the bolt the only way?? Also i want to remove it because it's very unballanced and makes the whole engine vibrate violently... I either want to change it or fix it somehow...
Also i tried to put it horizontally and it seems to run, i probably have to make some small changes to the carburator so it will run even if the tank isnt full... I'll do this if i choose to make a go-kart... But for now i want to remove the blade, also are you sure it wont run without the blade?
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Andrew
13/m/Canada
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| 15 L A T E S T R E P L I E S (Newest First) |
| Aaron Cake |
Posted - Sep 13 2004 : 09:19:19 AM
You'd have to probably put in 3-4 lires of oil to make the slinger work in a horizontal application. Even then, it will be pushing the oil the wrong way, and the massively overfilled crankcase will lead to other problems....
....which is the 2nd part of the question. Overfilling can cause many things. Oil will by pass the piston rings and get burned off. The major problem is that the crankshaft tends to turn oil into a froth of air bubbles. This froth has almost no lubricating properties. Also, the exrtra oil is a major drag on the crankshaft and causes power loss.
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| n/a |
Posted - Sep 11 2004 : 9:50:54 PM
quote:
Which is why I have said you need to replace the cam driven slinger with the dipper. The cam driven slinger doesn't rotate enough to catch oil when the engine is rotated. I have done this to several engines, and have taken apart hundreds of little B+S engines, so trust me on this. 
hey, I trust you on it.... I guess... why couldn't you put more oil in it to raise the level? speaking of oil levels, what happens if you over fill the oil in a vertical shaft B&S engine? cos, the one I was working on, had a dip stick.... with "do not over fill" written on it, and ofcourse, I over filled it. :p
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| Aaron Cake |
Posted - Sep 10 2004 : 08:58:39 AM
Which is why I have said you need to replace the cam driven slinger with the dipper. The cam driven slinger doesn't rotate enough to catch oil when the engine is rotated. I have done this to several engines, and have taken apart hundreds of little B+S engines, so trust me on this.
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| n/a |
Posted - Sep 09 2004 : 10:36:03 PM
quote:
As for running the engine sideways, DON'T DO IT. The lubrication system will not function if it is turned over. If you want to run it sideways, you will need to modify the carb/fuel tank, and install the oil dipper from the horizonal version of the same engine to provide lubrication to the valves and cylinder.
I dunno about that... It just so happens that I had the crank case cover half off a 3.5hp briggs and stratton engine, and it doesn't even use a similar lubrication system than the horizontal shaft briggs uses (pulled one of those apart too) while the horizintal simply has a splasher that dips into the oil every rotation, the vertical had a wheel, driven by the cam gears, with multiple "blades" that dipped into the oil.. the whole mechanism was also attached to the cam shaft, so it could rotate if the engine was tipped... (well, all that is to the best of my recollection)
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| wasssup1990 |
Posted - Apr 15 2004 : 06:58:09 AM
Yea, interesting reading this topic, i had 2 lawnmowers with the exact same problem. No matter how dam hard i tried to get the nut off, it would give up.
Advice: Do not, i repeat do not try and get a rusty nut off a mowers axle thread, it's a waste of time. Though it also depends on how long the nut has been rusty for.
I replied to this message because i didn't have anything ells to do.
Edited by - wasssup1990 on Apr 15 2004 07:00:04 AM |
| Aaron Cake |
Posted - Apr 12 2004 : 09:24:58 AM
There are several topics already here that cover go-karts with vertical shaft engines...A search should turn up all the info.
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| Alien |
Posted - Apr 11 2004 : 7:07:22 PM
I Finally got it, I tried everything. I tried, heating it, freezing it (lol), sanding it, lubing it and finally i just cut the damn thing off with a flex... And the blade came off, and for some odd reason that was left of the screw came off easily, I actually took it off with my hands, i guess the top part was the problem and the vibrations of the flex made it unscrew..
Anyway, now, what choices do i have? What can i do with this working engine?
I really want a go-kart but it has a vertical engine, and i've been looking everywhere for a used horizontal one arround here and I can't find one. I've heard of a few things, either, remaking the oil injector things and turning it over or buying some expensive gearbox.. I've also heard of some ways that seem to be pretty... long shot...
1. Using a V-Belt and rotating it
2. Overfilling it with oil so it still gets lubrified.
Anything else? Do these sound tryable?
Also, if it's really hopeless, what else could i do with this engine? Any ideas?
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Andrew
13/m/Canada
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| da-g-dog |
Posted - Sep 02 2003 : 12:51:31 PM
If you have a grinder, you could grind down two opposite sides of the bolt to make them flat again. Then get a cresent wrench and tighten it down on the two flat spots. Find a piece of pipe or something to use as a breaker bar and pull/push it to loosen the bolt.
hike master kyle |
| cirvin |
Posted - Sep 02 2003 : 08:56:17 AM
for rusted bolts, when you heat them, they expand and push outward, when they cool, the contract and leave a small space around them
next stop: nobel prize winner! |
| Brian |
Posted - Sep 01 2003 : 02:45:56 AM
Even though the heat causes it to expand, it still does wonders against anything rusted in place. I'm afaraid I don't know the exact physics of it.
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| Alien |
Posted - Aug 29 2003 : 4:28:19 PM
Noo... It was like that when i got it, my neibourgh(sp) probably tried to take it off too... But i helped... I tried but it wouldnt come off it would just get, well... round... Anyway i'm gonna try that soon...
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Andrew
13/m/Canada
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| Aaron Cake |
Posted - Aug 29 2003 : 4:18:53 PM
Heating something makes it expand. Heating a nut would make it easier to take off of a stud. Heating a bolt would make it more difficult to remove from a nut or other set of threads.
May I ask how you rounded it off?
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| Alien |
Posted - Aug 28 2003 : 6:46:57 PM
I did some research and you're right.. so this would only help by welding a new bolt somehow to the rounded one...
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Andrew
13/m/Canada
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| BEatonNo1 |
Posted - Aug 28 2003 : 5:49:38 PM
no when something is heated it expands...water is larger when it is frozen because of the way it freezes. the molecules try to arange themselfs into these neet little circles (the hydrogens connect)
If you take any element (not compound) and heat it up, then it will require more space than when it was cooler.
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| Alien |
Posted - Aug 28 2003 : 3:02:36 PM
no when its heated it contracts (becomes smaller) when it's cooled it expands.. Just like water.. I may be wrong though...
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Andrew
13/m/Canada
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